On Monday, December 1, 1958, a fire broke out at Our Lady of the Angels School in Chicago, Illinois, shortly before classes were to be dismissed for the day. The fire originated in the basement near the foot of a stairway. The elementary school was operated by the Archdiocese of Chicago and had an enrollment of approximately 1600 students. A total of 92 pupils and three nuns ultimately died when smoke, heat, fire, and toxic gases cut off their normal means of escape through corridors and stairways. Many more were injured when they jumped from second-floor windows which, because the building had a raised basement, were nearly as high above ground as a third floor would be on level ground, approximately 25 feet (7.6 m).